DEKRA Certification B.V.

?R. SchullerCertification Manager Page 1/5

©Integral publication of this certificate and adjoining reports is allowed. This Certificate may only be reproducedin its entirety and without any change.

DEKRA Certification B.V. Meander 1051, 6825 MJ Arnhem P.O. Box 5185, 6802 ED Arnhem The NetherlandsT +31 88 96 83000 F +31 88 96 83100 www.dekra-certification.com Registered Arnhem 09085396

CERTIFICATE(1) EC-Type Examination(2) Equipment and protective systems intended for use in

potentially explosive atmospheres - Directive 94/9/EC

(3) EC-Type Examination Certificate Number: DEKRA 11ATEX0109 X Issue Number: 4

(4) Equipment: Two Wire Analyzer Model FLXA21 and Mode FLXA202

(5) Manufacturer: Yokogawa Electric Corporation

(6) Address: 2-9-32 Nakacho, Musashino-shi, Tokyo, 180-8750, Japan

(7) This equipment and any acceptable variation thereto is specified in the schedule to this certificate and the documents therein referred to.

(8) DEKRA Certification B.V., notified body number 0344 in accordance with Article 9 of the Council Directive 94/9/EC of 23 March 1994, certifies that this equipment has been found to comply with the Essential Health and Safety Requirements relating to the design and construction of equipment and protective systems intended for use in potentially explosive atmospheres given in Annex II to the directive.

The examination and test results are recorded in confidential test report number NL/DEK/ExTR11.0036/04.

(9) Compliance with the Essential Health and Safety Requirements has been assured by compliance with:

EN 60079-0 : 2012 + A11 : 2013 EN 60079-11 : 2012

(10) If the sign ”X” is placed after the certificate number, it indicates that the equipment is subject to special conditions for safe use specified in the schedule to this certificate.

(11) This EC-Type Examination Certificate relates only to the design, examination and tests of the specified equipmentaccording to the Directive 94/9/EC. Further requirements of the directive apply to the manufacturing process and supply of this equipment. These are not covered by this certificate.

(12) The marking of the equipment shall include the following:

II 1 G Ex ia IIC T4 Ga

This certificate is issued on 9 September 2015 and, as far as applicable, shall be revised before the date of cessation of presumption of conformity of (one of) the standards mentioned above as communicated in the Official Journal of the European Union.

(13) SCHEDULE

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Form 100Version 5 (2013-07)

(15) Description

The two wire analyzer model FLXA21 and model FLXA202 are water quality analyzers that consist of a common functionality part (Housing Assembly) with 4-20 mA dc supply overlaid with digital communication protocol (HART) and communication unit, LCD and touch panel with two slots for insertion of one or two measuring modules (Sensor Modules).

For model FLXA21, optionally Housing Assembly can be of FOUNDATION Fieldbus / PROFIBUS PA type, in which case Housing Assembly outputs measured/calculated value directly to digital frame on the bus instead of 4-20 mA / HART outputs.

The following Sensor Modules are available: pH module, Contact Conductivity (SC) module, Inductive conductivity (ISC) module, Dissolved Oxygen (DO) module and SENCOM module.

The Housing Assembly with 4-20 mA (HART) protocol can contain up to two Sensor Modules, except for the ISC module and SENCOM module, where only one module can be installed at a time. Appropriate sensors can be connected to the Sensor Modules.

The Housing Assembly of FOUNDATION Fieldbus / PROFIBUS PA type can contain one Sensor Module only.

Ambient Temperature range: -20 ˚C to 55 ˚C

Enclosure options

Model FLXA21 of 4-20 mA / HART type can have enclosure made either of polycarbonate or stainless steel material.

Model FLXA21 of FOUNDATION Fieldbus / PROFIBUS PA type can have enclosure made of polycarbonate material only.

Model FLXA202 can have enclosure made of aluminium only.

(13) SCHEDULE

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Form 100Version 5 (2013-07)

Model codes

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Form 100Version 5 (2013-07)

Electrical data

Main communication unit (Housing Assembly);

4-20 mA TypeSupply and output circuit (terminals + and – ):in type of protection intrinsic safety Ex ia IIC, only for connection to a certified intrinsically safe circuit, with the following maximum values:Ui = 30 V; Ii = 100 mA; Pi = 0,75 W; Ci = 13 nF; Li = 0 mH, linear power source only.

(13) SCHEDULE

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Form 100Version 5 (2013-07)

FOUNDATION Fieldbus / PROFIBUS PA typeSupply and output circuit (terminals + and – ):in type of protection intrinsic safety Ex ia IIC, only for connection to a certified intrinsically safe circuit, with the following maximum values:Ui = 24 V; Ii = 250 mA; Pi = 1,2 W; Ci = 2,72 nF; Li = 0 mH.

Supply and output circuit (terminals + and -):in type of protection intrinsic safety Ex ia IIC, only for connection to a certified intrinsically safe circuit or a circuit in accordance with FISCO, with the following maximum values:Ui = 17,5 V; Ii = 380 mA; Pi = 5,32 W; Ci = 2,72 nF; Li = 0 mH.

Measuring Modules;

pH, SC, DOSensor circuit of Measuring modules pH (terminals 11, 12, 13, 14, 15, 16, 17, 18, 19), SC (terminals 11, 12, 13, 14, 15, 16) and DO (terminals 11, 12, 13, 14, 15, 16, 17, 18):in type of protection intrinsic safety Ex ia IIC, with the following maximum values:Uo = 11,76 V; Io = 116,5 mA; Po = 0,3424 W; Co = 100 nF; Lo = 1,7 mH.

ISCSensor circuit of Measuring module ISC (terminals 11, 12, 13, 14, 15, 16 and 17):in type of protection intrinsic safety Ex ia IIC, with the following maximum values:Uo = 11,76 V; Io = 60,6 mA; Po = 0,178 W; Co = 100 nF; Lo = 8 mH.

SENCOMSensor circuit of Measuring Module SENCOM (terminals 82, 83, 84, 86, and 87):in type of protection intrinsic safety Ex ia IIC, with the following maximum values:Uo = 5,36 V; Io = 106,16 mA; Po = 0,1423 W; Co = 31 µF; Lo = 0,45 mH.

Installation instructions

The instructions provided with the equipment shall be followed in detail to assure safe operation.

(16) Test Report

No. NL/DEK/ExTR11.0036/04.

(17) Special conditions for safe use

For applications in an area where the use of category 1 G equipment is required, electrostatic charges on the non-metallic or coated parts of the analyzer shall be avoided.

Since the enclosure of the Model FLXA202 is made of aluminium, if it is mounted in an area where the use of category 1 G equipment is required, it must be installed such, that, even in the event of rare incidents, ignition sources due to impact and friction sparks are excluded..

(18) Essential Health and Safety Requirements

Covered by the standards listed at (9).

(19) Test documentation

As listed in NL/DEK/ExTR11.0036/04.